Editing Korean Air Lines Flight 007 (section)

====Missile damage to plane====
The following damage to the aircraft was determined by the ICAO from its analysis of the flight data recorder and cockpit voice recorder:

=====Hydraulics=====
KAL&nbsp;007 had four [[Redundancy (engineering)|redundant]] hydraulic systems of which systems one, two, and three were damaged or destroyed. There was no evidence of damage to system four.<ref name="ICAO93-54" /> The hydraulics provided actuation of all primary and secondary flight controls (except leading edge slats in the latter) as well as landing gear retraction, extension, gear steering, and wheel braking. Each primary flight control axis received power from all four hydraulic systems.<ref>Norris and Wagner, ''Boeing''</ref> Upon missile detonation, the jumbo jet began to experience oscillations (yawing) as the dual channel yaw damper was damaged. Yawing would not have occurred if hydraulic systems one or two were fully operational. The result is that the control column did not thrust forward after missile detonation (it should have done so as the plane was on autopilot) to bring the plane down to its former altitude of {{convert|35000|ft|m}}. This failure of the autopilot to correct the rise in altitude indicates that hydraulic system number three, which operates the autopilot actuator, a system controlling the plane's elevators, was damaged or out. KAL&nbsp;007's airspeed and acceleration rate both began to decrease as the plane began to climb. At twenty seconds after the missile detonation, a click was heard in the cabin, which is identified as the "automatic pilot disconnect warning" sound. Either the pilot or co-pilot had disconnected the autopilot and was manually thrusting the control column forward to bring the plane lower. Though the autopilot had been turned off, manual mode did not begin functioning for another twenty seconds. This failure of the manual system to engage upon command indicates failure in hydraulic systems one and two. With wing flaps up, "control was reduced to the right inboard [[aileron]] and the innermost of spoiler section of each side".<ref name="ICAO93-54" />

=====Left wing=====
Contrary to Major Osipovich's statement in 1991 that he had taken off half of KAL&nbsp;007's left wing,<ref name="Illesh-Eng" /> ICAO analysis found that the wing was intact: "The interceptor pilot stated that the first missile hit near the tail, while the second missile took off half the left wing of the aircraft... The interceptor's pilot's statement that the second missile took off half of the left wing was probably incorrect. The missiles were fired at a two-second interval and would have detonated at an equal interval. The first detonated at 18:26:02&nbsp;UTC. The last radio transmissions from KE007 to Tokyo Radio were between 18:26:57 and 18:27:15&nbsp;UTC using HF [high frequency]. The HF 1 radio aerial of the aircraft was positioned in the left wing tip suggesting that the left wing tip was intact at this time. Also, the aircraft's maneuvers after the attack did not indicate extensive damage to the left wing."<ref name="ICAO93-39">ICAO '93, p. 39</ref>

=====Engines=====
The co-pilot reported to Captain Chun twice during the flight after the missiles' detonation, "Engines normal, sir."<ref name="safety">{{cite web |date=October 16, 2004 |title=CVR transcript Korean Air Flight 007 – 31 Aug 1983 |url=http://aviation-safety.net/investigation/cvr/transcripts/cvr_ke007.php |access-date=January 22, 2009 |website=Aviation Safety Network |publisher=Flight Safety Foundation}}</ref>

=====Tail section=====
The first missile was radar-controlled and [[proximity fuze]]d, and detonated {{convert|50|m|ft}} behind the aircraft. Sending fragments forward, it either severed or unraveled the crossover cable from the left inboard elevator to the right elevator.<ref name="ICAO93-55" /> This, with damage to one of the four hydraulic systems, caused KAL&nbsp;007 to ascend from {{convert|35000|to|38250|ft|m}}, at which point the autopilot was disengaged.

=====Fuselage=====
Fragments from the [[proximity fuze]]d [[air-to-air missile]] that detonated {{convert|50|m|ft}} behind the aircraft, punctured the fuselage and caused [[Uncontrolled decompression|rapid decompression]] of the pressurised cabin. The interval of 11 seconds between the sound of missile detonation picked up by the cockpit voice recorder and the sound of the alarm sounding in the cockpit enabled ICAO analysts to determine that the size of the ruptures to the pressurised fuselage was {{convert|1.75|ft2|m2}}.<ref name="ICAO93-93">ICAO '93, Information Paper 1, p. 93</ref>